12V started with the 55.2, but I don't think the distributor cares about voltage, other than the coil, which you must change to go 12V ... and either get an 'internally resisted' coil [will be an IC number, NAPA IC14], or you need an ignition resistor

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics